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Chittenden County, VT parcel and infrastructure data API

Korzy has about 48,000 parcel records for Chittenden County, Vermont, with source updates through October 2026. Nearly every record carries owner names, values and land use. In and around the county the API also maps 5 data-center projects (5 operating); about 25 power plants with about 200 MW of capacity, led by other fuels; and about 60 miles of active rail. Look up any parcel by address or coordinates, then check nearby data-center projects, utilities and grid context at the same point.

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Parcel coverage in Chittenden County

About 48,000 parcel records with boundaries, situs addresses and parcel numbers, with the latest source update from October 2026. Each record has a stable korzy_id you can store and look up again with /api/parcel-record. Share of records with each field:

FieldCoverageShare
Situs addressNearly all · 99%
Owner nameNearly all · 96%
Assessed or market valueNearly all · 96%
Year builtNot published
Building sizeNot published
Last saleNot published
Land useNearly all · 96%
ZoningNot published

Owner name and mailing address are returned with include_owner=true, which doubles a request's cost: a parcel record costs 2 credits instead of 1. 96% of Chittenden County records carry an owner name.

Infrastructure in and around Chittenden County

Power plants

About 25 operable plants with about 200 MW of nameplate capacity; largest by capacity: other fuels, oil, hydro. Proposed generators add about 15 MW.

Plant details: /api/power/plants/{plant_id}

Substations and transmission

About 35 in-service substations.

About 140 miles of transmission lines: about 40 mi at under 100 kV; about 100 mi at 100–161 kV.

Water and sewer service

Service areas of about 55 community water systems cover about 18% of the county.

Sewer service areas of about 10 systems cover about 6%.

At a point: /api/utilities/context

Data-center projects

5 tracked projects: 5 operating.

Within 10 km of a point: /api/datacenters/context

Grid capacity data

1 utility-published grid capacity layer cover parts of Chittenden County, including substation inventory.

Sources and dates: /api/grid/capacity/summary

Flood zones and wetlands

Special flood hazard areas cover about 18% of the county on the current federal flood maps, published June 2026.

Mapped wetlands cover about 7%.

Rail, ports and freight

  • About 60 miles of active rail, about 55 of it main line
  • About 40 miles of national freight network highway

Within 25 km of a point: /api/logistics/context

Example requests for Chittenden County

Real responses from the production API, trimmed to the main fields. Every request needs an API key with api:read; see authentication and credits and limits.

1. Find a parcel by address

/api/search matches 15 LIME ROCK RD, South Burlington, VT and returns the parcel's korzy_id, coordinates and record. 1 credit.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'q=15 LIME ROCK RD, South Burlington, VT' \
  https://api.korzy.co/api/search
Python
import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "15 LIME ROCK RD, South Burlington, VT"},
    headers={"Authorization": f"Bearer {os.environ['KORZY_API_KEY']}"},
    timeout=30,
)
response.raise_for_status()
parcel = response.json()["results"][0]
print(parcel["korzy_id"], parcel["longitude"], parcel["latitude"])
Response (trimmed)
{
  "results": [
    {
      "korzy_id": "50007-cfb5ca760ce9003b13d6",
      "address": "15 LIME ROCK RD",
      "city": "South Burlington",
      "postcode": "05403",
      "county": "Chittenden",
      "statefp": "50",
      "longitude": -73.15838845614962,
      "latitude": 44.4847549,
      "match_type": "exact",
      "parcelid": "600-188-12268",
      "parceladdr": "15 LIME ROCK RD",
      "parcelcity": "South Burlington",
      "situs_zip": "05403",
      "usedesc": "1.02A COMM",
      "land_use_code": "C",
      "taxacres": 1.02,
      "totalvalue": 451000,
      "land_value_usd": 121600,
      "improvement_value_usd": 329400,
      "updated": "2026-10-28",
      "geoid": "50007"
    }
  ],
  "truncated": false
}

With include_owner=true (2 credits) the record adds owner fields, shown here as placeholders:

{
  "owner_name": "EXAMPLE HOLDINGS LLC",
  "owner_mailing_address": "100 EXAMPLE ST, SAMPLE CITY, ST 00000"
}

2. Look up the parcel at a point

/api/query/point returns every parcel whose boundary covers the coordinates; here it returns the same record, 50007-cfb5ca760ce9003b13d6, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-73.158388' \
  --data-urlencode 'latitude=44.484755' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point
JavaScript
const params = new URLSearchParams({"longitude": "-73.158388", "latitude": "44.484755", "limit": "5"});
const response = await fetch(`https://api.korzy.co/api/query/point?${params}`, {
  headers: { Authorization: `Bearer ${process.env.KORZY_API_KEY}` },
});
if (!response.ok) throw new Error(`Korzy API ${response.status}`);
const { records } = await response.json();
console.log(records.map((record) => record.korzy_id));

3. Check nearby data-center projects

/api/datacenters/context lists data-center projects within 10 km of the point, nearest first. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-73.158388' \
  --data-urlencode 'latitude=44.484755' \
  --data-urlencode 'radius_km=10' \
  --data-urlencode 'limit=3' \
  https://api.korzy.co/api/datacenters/context
Python
import os
import requests

response = requests.get(
    "https://api.korzy.co/api/datacenters/context",
    params={"longitude": "-73.158388", "latitude": "44.484755", "radius_km": "10", "limit": "3"},
    headers={"Authorization": f"Bearer {os.environ['KORZY_API_KEY']}"},
    timeout=30,
)
response.raise_for_status()
for project in response.json()["projects"]:
    print(project["name"], project["status"], project["distance_km"])
Response (trimmed)
{
  "projects": [
    {
      "project_id": "dc_fd808f80a501864da4d6",
      "name": "Tech Vault Data Center",
      "operator": "Tech Vault, Inc.",
      "status": "operating",
      "city": "South Burlington",
      "state": "VT",
      "longitude": -73.1417505,
      "latitude": 44.4541938,
      "location_precision": "approximate",
      "distance_km": 3.645694908135889
    },
    {
      "project_id": "dc_909ce5744cfa5f68c946",
      "name": "Vermont Advanced Computing Center (VACC), University of Vermont",
      "operator": "University of Vermont",
      "status": "operating",
      "city": "South Burlington",
      "state": "VT",
      "longitude": -73.146839,
      "latitude": 44.448637,
      "location_precision": "approximate",
      "distance_km": 4.119385336124384
    },
    {
      "project_id": "dc_f9232dc7dc874f76d835",
      "name": "Lightboard ★ Vermont (530 Community Drive carrier hotel)",
      "operator": "Lightboard",
      "status": "operating",
      "city": "South Burlington",
      "state": "VT",
      "longitude": -73.146839,
      "latitude": 44.448637,
      "location_precision": "approximate",
      "distance_km": 4.119385336124384
    }
  ],
  "radius_km": 10,
  "limit": 3,
  "truncated": true
}

Chittenden County data questions

How many parcels in Chittenden County include values?
About 46,000 of about 48,000 parcel records (96%) include values.
Does the Korzy API return owner names for Chittenden County parcels?
Yes. 96% of Chittenden County parcel records carry an owner name. Add include_owner=true to a point, search or parcel-record request; it doubles the request's cost, so a single parcel record costs 2 credits.
How many data-center projects are in Chittenden County?
Korzy tracks 5 data-center projects in Chittenden County: 5 operating. /api/datacenters/context lists projects within 10 km of any point.
How much power generation is in Chittenden County?
About 25 operable power plants in Chittenden County total about 200 MW of nameplate capacity, mainly other fuels, oil and hydro.
Which water systems serve Chittenden County?
Service areas of about 55 community water systems cover about 18% of Chittenden County, and sewer service areas cover about 6%. /api/utilities/context returns the water and sewer matches at a point.

Build on Chittenden County parcel data

Search, point and record lookups work the same in every county Korzy covers. Credits are shared across parcels, utilities, environment, logistics and data-center routes.

Get an API keySee pricingAPI referenceUse cases for parcel and infrastructure data